Split fwl/core class pt II.

xfa/fwl/core/cfwl_eventtarget.cpp

+// Copyright 2016 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "xfa/fwl/core/cfwl_eventtarget.h"
+
+#include "xfa/fwl/core/ifwl_widget.h"
+#include "xfa/fwl/core/ifwl_widgetdelegate.h"
+
+CFWL_EventTarget::CFWL_EventTarget(IFWL_Widget* pListener)
+    : m_pListener(pListener), m_bInvalid(false) {}
+
+CFWL_EventTarget::~CFWL_EventTarget() {
+  m_eventSources.RemoveAll();
+}
+
+int32_t CFWL_EventTarget::SetEventSource(IFWL_Widget* pSource,
+                                         uint32_t dwFilter) {
+  if (pSource) {
+    m_eventSources.SetAt(pSource, dwFilter);
+    return m_eventSources.GetCount();
+  }
+  return 1;
+}
+
+bool CFWL_EventTarget::ProcessEvent(CFWL_Event* pEvent) {
+  IFWL_WidgetDelegate* pDelegate = m_pListener->GetDelegate();
+  if (!pDelegate)
+    return false;
+  if (m_eventSources.GetCount() == 0) {
+    pDelegate->OnProcessEvent(pEvent);
+    return true;
+  }
+
+  FX_POSITION pos = m_eventSources.GetStartPosition();
+  while (pos) {
+    IFWL_Widget* pSource = nullptr;
+    uint32_t dwFilter = 0;
+    m_eventSources.GetNextAssoc(pos, (void*&)pSource, dwFilter);
+    if (pSource == pEvent->m_pSrcTarget) {
+      if (IsFilterEvent(pEvent, dwFilter)) {
+        pDelegate->OnProcessEvent(pEvent);
+        return true;
+      }
+    }
+  }
+  return false;
+}
+
+bool CFWL_EventTarget::IsFilterEvent(CFWL_Event* pEvent,
+                                     uint32_t dwFilter) const {
+  if (dwFilter == FWL_EVENT_ALL_MASK)
+    return true;
+
+  switch (pEvent->GetClassID()) {
+    case CFWL_EventType::Mouse:
+      return !!(dwFilter & FWL_EVENT_MOUSE_MASK);
+    case CFWL_EventType::MouseWheel:
+      return !!(dwFilter & FWL_EVENT_MOUSEWHEEL_MASK);
+    case CFWL_EventType::Key:
+      return !!(dwFilter & FWL_EVENT_KEY_MASK);
+    case CFWL_EventType::SetFocus:
+    case CFWL_EventType::KillFocus:
+      return !!(dwFilter & FWL_EVENT_FOCUSCHANGED_MASK);
+    case CFWL_EventType::Close:
+      return !!(dwFilter & FWL_EVENT_CLOSE_MASK);
+    case CFWL_EventType::SizeChanged:
+      return !!(dwFilter & FWL_EVENT_SIZECHANGED_MASK);
+    default:
+      return !!(dwFilter & FWL_EVENT_CONTROL_MASK);
+  }
+}